President-elect Bola Tinubu, center, displays his certificate, accompanied by his wife Oluremi Tinubu, right, and chairman of the Independent National Electoral Commission Mahmood Yakubu at a ceremony in Abuja, Nigeria, March 1, 2023.[AP]
Nigeria's opposition candidates for president say they will challenge the results declaring the ruling party candidate the winner. Saturday's election was marred by technical and staff problems that saw voting delayed by a day or more at some polling stations.